The most common and most likely answer to this crossword clue is the 6 letter word CYBORG
I've seen this crossword clue in Financial Times
C
Y
B
O
R
G
More clues leading to the result CYBORG
- Empty copy right in mire, being enhanced by technology
- Superman repelled by feeding dog that lacks tail
- Robot dog I avoided by rearing inside
- Extremely chunky bonobo resembling Darth Vader?
- Robot crew snog by vibrating
- Superman repelled by feeding clipped dog
- Corbyn, ignoring North, upset key machine man
- The Terminator, clearly without heart, dull, not fashionable
- Tennis legend pursuing crazy case for bionic man
- Someone who leads a mechanical life!
Buddy explains!
The straight part
We know that "Darth Vader?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case darth vader? = cyborg.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CYBORG mean?
CYBORG noun- A person who is part machine, a robot who is part organic.
- A robot who has an organic past.
- A human with electronic or bionic prostheses.